RE: Help with parameter passing

["Bob cozzi" <cozzi@xxxxxxxxx>]

Actually that's not correct, well it is and it isn't.
When Funct(float *, ... ) is specified you must pass by reference (which is
effectively a pointer). 
When Funct(float, ...) is specified you must pass by value.



Bob Cozzi
Cozzi Consulting
www.rpgiv.com


-----Original Message-----
From: rpg400-l-bounces@xxxxxxxxxxxx [mailto:rpg400-l-bounces@xxxxxxxxxxxx]
On Behalf Of Christen, Duane J.
Sent: Thursday, October 09, 2003 3:47 PM
To: 'RPG programming on the AS400 / iSeries'
Subject: RE: Help with parameter passing

Barbara;
This being a C function it expects a parm to be passed by value. 
If the C function prototype looks like this:

function(float *, .... ) 

Then you must pass a pointer to a float variable

If it looks like this:

function(float, .....

Then you must pass the float variable.

Duane


-----Original Message-----
From: Barbara Morris [mailto:bmorris@xxxxxxxxxx]
Sent: Thursday, October 09, 2003 1:18 PM
To: rpg400-l@xxxxxxxxxxxx
Subject: Re: Help with parameter passing


"DeLong, Eric" wrote:
> 
> So far so good.  Now the problem.  The use of this api states:
> 
>

Eric, while the others' suggestion of changing the prototype to be a
pointer and passing *NULL will work, I think it's better to prototype it
as a float, with OPTIONS(*OMIT), and then pass *OMIT for null.

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